Hint

Answer

Birds.

1. Never Eat Sour Watermelons is used sometimes as a mnemonic device because the beginnings of the words in that sentence is N.E.S.W.
Also known as North East South West. Those are CARDINAL directions. The CARDINAL is a type of bird.

2. The animal that represents the United States is the American Bald Eagle, which is a type of bird.

3. In Red Bull commercials, their slogan is "Red Bull gives you wings."
All BIRDS have wings, whether they can fly or not.

4. Angels. They have wings, too.

5. In golf, they often use the term "birdie" and "eagle".

6. A few years back, one of Boston Celtics star players was Larry BIRD.Hide